不同山葡萄品种光响应模型拟合及综合评价

为筛选最适合山葡萄的光合-光响应模型和光能利用效果最佳的山葡萄品种,选取'北冰红"双红'左优红"雪兰红"北国红'和'双丰'6个山葡萄品种,利用直角双曲线模型、非直角双曲线模型、直角双曲线修正模型和指数函数模型4个光响应模型,通过因子分析对最大净光合速率(Pnmax)、表观量子效率(α)、暗呼吸速率(Rdark)、光补...

Light Response Model Fitting and Comprehensive Evaluation for Vitisamurensis

In order to select the best Vitisamurensis variety and photosynthetic-light response model， 6 Vitisamurensis varieties including ‘Beibinghong’ ‘Shuanghong’ ‘Zuoyouhong’ ‘Xuelanhong’ ‘Beiguohong’ and ‘Shuangfeng’ were as materials. And their light response curves were fitted by rectangular hyperbola model，non-rectangular hyperbola model， modified rectangular hyperbola model and exponential model， respectively. The maximum net photosynthetic rate （P_nmax）， dark respiration rate （R_dark）， apparent quantum yield （α）， light compensation point （LCP） and light saturation point （LSP） were evaluated. Compared with measured values， the modified rectangular hyperbola model had the best fitting effect on the photosynthetic-light response of Vitisamurensis variety except for the LSP of ‘Beibinghong’， which the P_nmax， α， R_dark， LCP and LSP calculated by model were closest to the measured values. Two principal components with characteristic root >1 were extracted by principal component analysis and their cumulative contribution was 82.71%. The comprehensive evaluation and cluster analysis showed that ‘Beibinghong’ was the best variety with the high utilization of light， which could be planted in strong light environment and take fully use of light energy， which provided technical reference for the promotion of Vitisamurensis in Xinjiang.